%I #16 Mar 19 2017 12:57:19
%S 1,1,4,5,19,385,1174,1559,5851,7410,450451,457861,1824034,2281895,
%T 8669719,175676275,535698544,711374819,2669823001,3381197820,
%U 205541692201,208922890021,832310362264,1041233252285,3956010119119,80161435634665,244440317023114
%N Denominators of continued fraction convergents to sqrt(948).
%H Vincenzo Librandi, <a href="/A042835/b042835.txt">Table of n, a(n) for n = 0..200</a>
%H <a href="/index/Rec#order_20">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 456302, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
%F G.f.: -(x^18 -x^17 +4*x^16 -5*x^15 +19*x^14 -385*x^13 +1174*x^12 -1559*x^11 +5851*x^10 -7410*x^9 -5851*x^8 -1559*x^7 -1174*x^6 -385*x^5 -19*x^4 -5*x^3 -4*x^2 -x -1) / (x^20 -456302*x^10 +1). - _Colin Barker_, Dec 24 2013
%t Denominator[Convergents[Sqrt[948], 30]] (* _Vincenzo Librandi_, Jan 30 2014 *)
%Y Cf. A042834, A040917.
%K nonn,frac,easy
%O 0,3
%A _N. J. A. Sloane_.
%E More terms from _Colin Barker_, Dec 24 2013